This repo is essentially a dumping ground for stuff related to the Digirule 2U.
The digirule 2U is an 8-bit computer integrated into a ruler-shaped PCB and inspired by the classic Altair 8800.
Unlike the Altair though, it has a lot of limits, such as only having 256 bytes of RAM, it's essentially a cool little toy.
Anyway, included in this repo are various tools for working with the device and some sample code and fiddles, see my AltairExperiments repo too to get an idea.
Hackers rejoice!
Regarding the license, assume everything is GPL v3.0 - this is for compatibility with the upstream code written by Brad Slattery.